Organic light emitting display device

Abstract

An organic light emitting display device includes first and second substrates, a display unit on the first substrate, a metal layer on the first substrate and including a plurality of first straight and curved portions arranged to surround the display area, and a sealant bonding the first substrate and the second substrate, the sealant at least partially being on the metal layer and including a plurality of second straight and curved portions arranged to surround the display area, wherein the metal layer includes an inner area facing toward the display unit and an outer area outside the inner area in a width direction, the inner area in the first curved portions being thinner in the width direction than the inner area in the first straight portions.

What is claimed is: 
     
       1. An organic light emitting display device, comprising: a first substrate; a second substrate facing the first substrate; a display unit defining a display area on the first substrate; a metal layer on the first substrate, the metal layer including: a plurality of first straight portions, and a plurality of first curved portions connecting the plurality of first straight portions, the plurality of first straight and curved portions of the metal layer being arranged to surround the display area; and a sealant bonding the first substrate and the second substrate, the sealant at least partially being on the metal layer and including: plurality of second straight portions, and a plurality of second curved portions connecting the plurality of second straight portions, the plurality of second straight and curved portions of the sealant being arranged to surround the display area, wherein the metal layer is below the sealant such that the metal layer is arranged to transfer heat to the sealant, and wherein the metal layer includes an inner area extending from a center line of the metal layer to a respective innermost extent of the metal layer and facing toward the display unit, and an outer area outside the inner area in a width direction, the width of the inner area in the first curved portions being smaller than the width of the inner area in the first straight portions. 
     
     
       2. The organic light emitting display device as claimed in  claim 1 , further comprising a groove in the inner area of the plurality of first curved portions of the metal layer. 
     
     
       3. The organic light emitting display device as claimed in  claim 1 , wherein widths of the plurality of first curved portions of the metal layer are smaller than widths of the plurality of first straight portions of the metal layer. 
     
     
       4. The organic light emitting display device as claimed in  claim 3 , wherein a distance from the display unit to the inner area of each of the plurality of first curved portions of the metal layer is larger than a distance from the display unit to the inner area of each of the plurality of first straight portions of the metal layer. 
     
     
       5. The organic light emitting display device as claimed in  claim 1 , wherein:
 the sealant includes an inner area facing toward the display unit and an outer area disposed outside the inner area in a width direction, and 
 when a laser beam is radiated onto the sealant, an amount of heat transferred to the plurality of second curved portions of the sealant from the metal layer is smaller in the inner area of the sealant than in the outer area of the sealant. 
 
     
     
       6. The organic light emitting display device as claimed in  claim 5 , wherein, when the laser beam is radiated onto the sealant, an amount of heat transferred to the plurality of second straight portions of the sealant from the metal layer is substantially the same in the inner area of the sealant and in the outer area of the sealant. 
     
     
       7. The organic light emitting display device as claimed in  claim 1 , further comprising an insulating layer between the first substrate and the sealant, the insulating layer at least partially covering the metal layer. 
     
     
       8. The organic light emitting display device as claimed in  claim 7 , wherein the insulating layer covers the plurality of first curved portions of the metal layer, a trench, into which the sealant is inserted, penetrating the insulating layer at a positioned between the inner area of the metal layer and the display unit. 
     
     
       9. The organic light emitting display device as claimed in  claim 8 , wherein;
 the insulating layer covers the plurality of first curved portions of the metal layer, and includes a plurality of openings into which the sealant is inserted, and 
 a width of the trench is equal to or greater than two times of a width of an outermost opening from among the plurality of openings. 
 
     
     
       10. The organic light emitting display device as claimed in  claim 1 , further comprising a low conductivity member in the inner area of the plurality of first curved portions of the metal layer, the low conductivity member including a material having a thermal conductivity that is lower than a thermal conductivity of the outer area of the plurality of first curved portions of the metal layer. 
     
     
       11. The organic light emitting display device as claimed in  claim 1 , wherein the sealant further comprises a first extension sealant overlapping with at least a part of a signal wiring for applying a signal to the display unit. 
     
     
       12. The organic light emitting display device as claimed in  claim 1 , wherein the plurality of second curved portions of the sealant further comprise a second extension sealant disposed outside the plurality of first curved portions of the metal layer. 
     
     
       13. The organic light emitting display device as claimed in  claim 2 , wherein the groove in the inner area of the plurality of first curved portions of the metal layer includes no metal. 
     
     
       14. The organic light emitting display device as claimed in  claim 1 , wherein the first curved portions include areas in which metal extends from the respective innermost extent to a respective outer line of the metal layer, the first curved portions of the metal layer having respective cut away regions that define the respective innermost extent.